EP0656723A1 - Procédé et appareil pour le chiffrage d'informations d'image - Google Patents

Procédé et appareil pour le chiffrage d'informations d'image Download PDF

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Publication number
EP0656723A1
EP0656723A1 EP94111502A EP94111502A EP0656723A1 EP 0656723 A1 EP0656723 A1 EP 0656723A1 EP 94111502 A EP94111502 A EP 94111502A EP 94111502 A EP94111502 A EP 94111502A EP 0656723 A1 EP0656723 A1 EP 0656723A1
Authority
EP
European Patent Office
Prior art keywords
image information
image
unit
guide
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94111502A
Other languages
German (de)
English (en)
Inventor
Okie Tani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TANI ELECTRONICS INDUSTRY Co Ltd
Tani Denkikogyo Co Ltd
Original Assignee
TANI ELECTRONICS INDUSTRY Co Ltd
Tani Denkikogyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP5299559A external-priority patent/JPH07152320A/ja
Priority claimed from JP5309574A external-priority patent/JPH07159330A/ja
Application filed by TANI ELECTRONICS INDUSTRY Co Ltd, Tani Denkikogyo Co Ltd filed Critical TANI ELECTRONICS INDUSTRY Co Ltd
Publication of EP0656723A1 publication Critical patent/EP0656723A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09C—CIPHERING OR DECIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHER PURPOSES INVOLVING THE NEED FOR SECRECY
    • G09C5/00—Ciphering apparatus or methods not provided for in the preceding groups, e.g. involving the concealment or deformation of graphic data such as designs, written or printed messages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/44—Secrecy systems
    • H04N1/448—Rendering the image unintelligible, e.g. scrambling
    • H04N1/4493—Subsequently rendering the image intelligible using a co-operating image, mask or the like

Definitions

  • the present invention relates to a method of and system for enciphering image information when dealt with by computers, facsimile equipments, copying machines or diverse cameras.
  • an object of the present invention to provide a method of and system for enciphering image information which allows easy encipherment and impossible decipherment.
  • a method of enciphering and deciphering an image information with image elements comprising the steps of: forming a means for guiding the image information, said guiding means including a plurality of unit guides with end faces on first and second sides, said end faces on said first and second sides failing to correspond to each other in view of a positional relationship, each unit guide serving to guide one of the image elements; giving position designating codes to said end faces of said plurality of unit guides on said first and second sides; obtaining a corresponding relation information on said position designating codes on said first and second sides; and providing to an image information processing device the image information which is input to said guiding means on said first side and output therefrom on said second side, wherein when deciphering the image information as provided, said image information processing device recognizes said position designating codes of the image elements of the image information as provided and rearranges the image elements in accordance with said corresponding relation information so as to restore the image information input to said guiding means.
  • a system for enciphering and deciphering an image information with image elements comprising: a means for guiding the image information, said guiding means including a plurality of unit guides with end faces on first and second sides, said end faces on said first and second sides failing to correspond to each other in view of a positional relationship, each unit guide serving to guide one of the image elements, said end faces on said first and second sides having position designating codes, respectively; a means for converting the image information obtained through said guiding means into a predetermined data; a means for providing said predetermined data; a means for receiving said predetermined data derived from said providing means; a means for storing a corresponding relation information on said position designating codes on said end faces on said first and second sides; a means for processing said predetermined data derived from said receiving means in recognizing said position designating codes of the image elements of the image information output from said guiding means on said second side so as to rearrange the image elements in accordance with said corresponding relation information
  • a system for picking up an image information comprising: a means for guiding the image information, said guiding means including a plurality of unit guides as assembled regularly, each having an end face on an outgoing side; and a means for converting photoelectrically the image information into an electric signal, said converting means including a plurality of light receiving elements, at least one of said plurality of light receiving elements being optically coupled with said end face of said each unit guide.
  • a system for confirming an identity of an object comprising: a means for picking up an image information of the object; a means for reading a unit of said image information of said picking up means; a means for storing a unit of a criterion information for deciding the identity of said unit of said image information; a means for comparing said unit of said image information with said unit of said criterion information; and a means for deciding the identity of said unit of said image information in accordance with a result of said comparing means.
  • an enciphering image guide means 1 comprises a plurality of optical fibers 1c assembled irregularly as shown in Fig. 1A, and having end faces on incoming and outgoing sides 1a, 1b formed in a predetermined shape, e.g., in a square as shown in Fig. 1A.
  • a single optical fiber 1c serves to guide one image element.
  • the end faces on the incoming and outgoing sides 1a, 1b may be formed in the other shape, for example, in a hexagon.
  • Fig. 2 shows a system for obtaining corresponding relation information on position designating codes between the incoming and outgoing sides of the enciphering image guide means 1.
  • the position designating codes A1, A2, ... are given to the optical fibers 1 of the enciphering image guide means 1 on the incoming side 1a as shown in Fig. 1B, whereas the position designating codes B1, B2, ... are given thereto on the outgoing side 1b as shown in Fig. 1C.
  • the enciphering image guide means 1 is positioned in a space apart from an XY table 2, and fixed so that the incoming side 1a is opposite to an upper surface of the XY table 2.
  • a projector 3 Arranged on the XY table 2 is a projector 3 which provides light incident on only any one of the optical fibers 1c of the enciphering image guide means 1 on the incoming side 1a.
  • a charge coupled device (CCD) camera 4 is disposed opposite to the outgoing side 1b of the enciphering image guide means 1.
  • CCD charge coupled device
  • the inspection device 5 serves to control the XY table 2 for scanning the incoming side 1a of the enciphering image guide means 1, i.e., sequentially providing light incident on each optical fiber end on the incoming side 1a. Light incident on the end face of any one of the optical fibers 1c goes out from a predetermined position of the outgoing side 1b. The CCD camera 4 catches this outgoing light, which is input to the inspection device 5. The inspection device 5 previously recognizes the position designating codes B1, B2, ... of the optical fiber end faces on the outgoing side 1b, and grasps the position designating code corresponding to the optical fiber end face from which light goes out.
  • the above operation is carried out with regard to all of the optical fiber end faces on the incoming side 1a by scanning the projector 3, obtaining corresponding relation data on the position designating codes A1, A2,... of the optical fiber end faces on the incoming side 1a and those B1, B2, ... on the outgoing side 1b.
  • Fig. 3 shows an example of a system using image information enciphered according to the present invention.
  • image information as enciphered in an image information enciphering device on the transmitting side is sent to an image information processing device on the receiving side wherein original image information is restored.
  • an image of a subject 6 is picked up by a CCD camera 8 through a lens 7 and the enciphering image guide means 1 as shown in Fig. 1A, which is input to an image data processing device such as a central processing unit (CPU) 9.
  • the CCD camera 8, the lens 7 and the enciphering image guide means 1 constitute an image pickup device.
  • image data as input is transmitted to the receiving side through a modem 10, or printed by a printer 11, which is delivered to the receiving side through a facsimile equipment 12 or by mail or door-to-door.
  • image data is received through a modem 13 in case of transmission, which is input to a CPU 14, or received through a facsimile equipment 15 in case of facsimile, which is input to the CPU 14 through an image sensor 16. Also, in case of mail, etc., image data in printed matters is input to the CPU 14 through the image sensor 16.
  • the CPU 14 carries out a rearrangement of the image elements of image data as input to restore an original image of the subject 6, which is displayed on a monitor 18 or printed by using a printer 19.
  • the CPU 9 on the transmitting side correctly recognizes the position designating codes on the image as input, so that position matching is previously carried out between the enciphering image guide means 1 and the CCD camera 8.
  • the CPU 14 correctly recognizes position designating codes (which correspond to the position designating codes B1, B2, ... on the outgoing side 1b) of the image elements of the image enciphered by image processing with the aid of a position mark of the image as input, etc., and rearranges the image elements in referring to the position designating codes A1, A2, ... on the incoming side 1a which correspond to the position designating codes B1, B2, ... on the outgoing side 1b in corresponding relation data stored in the memory 17.
  • Decipherment is thus carried out.
  • corresponding relation data is confidential
  • the confidentiality of image information delivered to the receiving side from the transmitting side is surely maintained even in case of a delivery by mistake or a furtive check.
  • the features of encipherment according to the present invention reside in the fact that the more the image elements increase, the more deciperment is difficult due to the use of a quite casually produced combination of the optical fibers without utilizing logical enciphering means such as CPU, etc. which are seemed to be decipherable sooner or later.
  • the enciphering image guide means 1 is formed by a single enciphering image guide.
  • the enciphering image guide means 1' may be formed by an enciphering image guide assembly which includes a plurality of enciphering image guides 1d as irregularly assembled.
  • position designating codes as given to the enciphering image guide assembly on the incoming side 1a are comprised of position designating codes C1, C2, ... of the enciphering image guides 1d and those A1, A2, ... of the optical fiber end faces of each enciphering image guide 1d, whereas as shown in Fig.
  • position designating codes as given to the enciphering image guide assembly on the outgoing side 1b are comprised of position designating codes D1, D2, ... of the enciphering image guides 1d and those B1, B2, ... of the optical fiber end faces of each enciphering image guide 1d.
  • the enciphering image guide means may be a series connection of the enciphering image guides as shown in Figs. 1A to 1C, or that of the enciphering image guide assembly as shown in Fig. 4A and 4B.
  • a single image guide unit as formed by bundling a plurality of optical fibers can be used to guide one image element.
  • Corresponding relation data on those enciphering image guide means on the incoming and outgoing sides are obtained in the same way as described in connection with Fig. 2. It is to be noted that the inspection device may be a scanning type electron probe by which corresponding relation data can be obtained in the same way.
  • a document as printed by the printer 11 is transmitted by the facsimile 12, which is received by the facsimile 15, and read and restored.
  • a document to be transmitted by the facsimile on the transmitting side may directly be enciphered to provide a facsimile signal, which is received by the facsimile on the receiving side, and directly deciphered and output.
  • a photoelectric conversion element such as a piezoelement or the like can be used in place of the CCD camera.
  • a floppy disk, a memory card or a microfilm which is suitable for preservation can be used in addition to printing papers.
  • image information can be enciphered and dealt with in an easy way, and decipherment borders on impossibility since encipherment is carried out by a casual combination of enciphering image guides, and not a logical disposition such as computer processing, resulting in increased confidentiality of image information.
  • an image pickup device 23 includes a light receiving element array 21 with a plurality of photoelectric conversion light receiving elements 21a arranged in a matrix, and an image guide 22 with a plurality of optical fibers 22a assembled so that the arrangement on the input side or incoming side corresponds to that on the output side or outgoing side.
  • an end face of each optical fiber 22a of the image guide 22 on the output side is regularly optically coupled with each light receiving element 21a or light receiving elements of the light receiving element array 21.
  • the arrangement of the image guide 22 on the output side is made to correspond to that of the light receiving element array 21, or in case the light receiving element 21a is smaller than the optical fiber 22a of the image guide 22, the end face of one optical fiber 22a is made to correspond to a predetermined number, more than two, of light receiving elements 21a of the light receiving element array 21.
  • the above structure has the advantage of being capable of construct the image pickup device without using a CCD camera.
  • the image pickup device may be of a solid state type such as a CCD camera in place of the light receiving element array 21.
  • the inspection system for deciding the identity of an inspection object includes the image pickup device 23 as described above, an inspection object 24, an image information read part 25 for reading image information from the image pickup device 23, an image information storage part 27 for temporarily storing image information as read, a criterion information storage part for previously storing, for every image information unit, criterion information which serves to decide the identity of image information, a comparison and collation part 28 for comparing and collating, for every image information unit, image information in the image information storage part 26 with criterion information in the criterion information storage part 7, and a decision part 29 for deciding the identity or approximation of image information as read in accordance with a comparison and collation result in the comparison and collation part 28.
  • the inspection object 24 is relative, for example, to a mounted state of printed circuit boards, a printed state of cream solder, or identification of electronic and electric apparatus.
  • the inspection system having the above structure is operated as follows: An image of the inspection object 24 is conducted by the image guide 22 of the image pickup device 23, and an image element as formed in each optical fiber 22a is detected by each light receiving element 21a of the light receiving element array 21 as an image information unit.
  • the image information read part 25 scans horizontally, for example, and reads one by one trains of light receiving elements 21a of the light receiving element array 21, which are stored in the image information storage part 26 of a frame memory type. In case one image element corresponds to a plurality of light receiving elements 21a, it is only necessary to skip horizontal and vertical scanning, or thin out image information as read at regular intervals.
  • the comparison and collation part 28 reads out image information in the image information storage part 26 one by one, and takes out criterion information corresponding thereto so as to carry out comparison and collation between the two, informing the decision part 29 of coincidence or incoincidence of the two. If the number of incoincidence is smaller than the allowable number, for example, the decision part 29 decides that the inspection object 24 is identical or approximate to the reference.
  • the premise is such that the inspection object 24 and the image pickup device 23 are relatively accurately positioned, or the position of the inspection object 24 is accurately grasped by the image pickup device 23.
  • the inspection object 24 or the image pickup device 23 is simply positioned by controlling a positioning mechanism (not shown) such as an XY table, etc. so as to read positioning marks 24a, 24b of the inspection object 24.
  • the image information read part 25 or the other sensor may be used as a means for reading the positioning marks 24a, 24b.
  • the following are applicable: Using the comparison and collation part 28 to recognize the positioning marks 24a, 24b and preparing in the criterion information storage part 27 some criterion informations having a probable displacement as presumed, comparison and collation are carried out based on criterion information corresponding to the recognized position of the positioning marks 24a, 24b. Moreover, image information or criterion information or a read address of one of them is corrected based on calculation of a displacement amount of the positioning marks 24a, 24b.
  • the identity of the inspection object 24 can be decided by easy processing which needs relatively less processing time, i.e., comparison and collation processing with criterion information stored in the same way. Therefore, it is unnecessary to rely upon an image processing device which makes the system structure complex, and complicated image processing which needs much processing time such as split/cutting processing of an image, pattern recognition or the like, making the system structure and processing very simple.
  • an object lens is not used, alternatively, is may be used to focus into an image of the inspection object 24 on the input side of the image guide 22. Moreover, it is possible to obtain image information with a predetermined wavelength by properly using a filter, etc., or tricolored image information by using a dichroic mirror.
  • an optical fiber serves as an image guide
  • a plurality of optical fibers as assembled can serve as a single image guide so as to properly change the magnitude of the image element.
  • a member other than the optical fiber can be used as an image guide.
  • the image guide can serve as a temperature sensor by using a temperature characteristic of the optical fiber.
  • the image information storage part 26 of a frame memory type can be omitted.
  • the identity of the inspection object can be decided with the simple structure and processing and at high speed without relying upon image processing technique using the image processing device.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
EP94111502A 1993-11-30 1994-07-22 Procédé et appareil pour le chiffrage d'informations d'image Withdrawn EP0656723A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP299559/93 1993-11-30
JP5299559A JPH07152320A (ja) 1993-11-30 1993-11-30 イメージ情報暗号化方法およびシステム
JP5309574A JPH07159330A (ja) 1993-12-10 1993-12-10 撮像装置とそれを用いた検査装置
JP309574/93 1993-12-10

Publications (1)

Publication Number Publication Date
EP0656723A1 true EP0656723A1 (fr) 1995-06-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94111502A Withdrawn EP0656723A1 (fr) 1993-11-30 1994-07-22 Procédé et appareil pour le chiffrage d'informations d'image

Country Status (4)

Country Link
EP (1) EP0656723A1 (fr)
CN (1) CN1109192A (fr)
SG (1) SG65532A1 (fr)
TW (1) TW241431B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077555A1 (fr) * 1999-06-15 2000-12-21 Intel Corporation Procede et dispositif destines a l'utilisation de faisceaux optiques non coherents pour la transmission d'images
US8507856B2 (en) 2005-02-25 2013-08-13 Hitachi High-Technologies Corporation Pattern measuring method and pattern measuring device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200948955A (en) 2008-05-22 2009-12-01 Green Health Biotechnology Co Ltd Method of ripening wine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3283651A (en) * 1964-05-15 1966-11-08 Xerox Corp Information encoding device
JPS5173484A (ja) * 1974-12-21 1976-06-25 Nippon Steel Corp Kyukodojidosokuteihoho oyobi sochi
US4185888A (en) * 1962-09-21 1980-01-29 Quelle Fred W Jr Cryptographic system employing optical scrambling arrays
US4459611A (en) * 1978-08-28 1984-07-10 Fuji Xerox Co., Ltd. Image conversion system
EP0155478A2 (fr) * 1984-02-17 1985-09-25 George D. Margolin Appareillage d'entrée ou sortie avec un faisceau fibre-optique avec des moyens électroniques pour fournir de la cohérence
JPS62116081A (ja) * 1985-11-15 1987-05-27 Nec Home Electronics Ltd 秘画像撹乱・再生システム
US4841142A (en) * 1987-11-03 1989-06-20 Photon Devices, Ltd. Document scanner with resolution selection control
DE4021061A1 (de) * 1990-07-04 1992-01-09 Holzer Walter Verfahren zur codierung von faksimilen fernkopien

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185888A (en) * 1962-09-21 1980-01-29 Quelle Fred W Jr Cryptographic system employing optical scrambling arrays
US3283651A (en) * 1964-05-15 1966-11-08 Xerox Corp Information encoding device
JPS5173484A (ja) * 1974-12-21 1976-06-25 Nippon Steel Corp Kyukodojidosokuteihoho oyobi sochi
US4459611A (en) * 1978-08-28 1984-07-10 Fuji Xerox Co., Ltd. Image conversion system
EP0155478A2 (fr) * 1984-02-17 1985-09-25 George D. Margolin Appareillage d'entrée ou sortie avec un faisceau fibre-optique avec des moyens électroniques pour fournir de la cohérence
JPS62116081A (ja) * 1985-11-15 1987-05-27 Nec Home Electronics Ltd 秘画像撹乱・再生システム
US4841142A (en) * 1987-11-03 1989-06-20 Photon Devices, Ltd. Document scanner with resolution selection control
DE4021061A1 (de) * 1990-07-04 1992-01-09 Holzer Walter Verfahren zur codierung von faksimilen fernkopien

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
"PERSONAL OPTICAL ENCRYPTION / DECRYPTION DEVICE", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 28, no. 7, December 1985 (1985-12-01), pages 3070 - 3071 *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 329 (E - 552) 27 October 1987 (1987-10-27) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 588 (P - 1634) 27 October 1993 (1993-10-27) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000077555A1 (fr) * 1999-06-15 2000-12-21 Intel Corporation Procede et dispositif destines a l'utilisation de faisceaux optiques non coherents pour la transmission d'images
US6524237B1 (en) 1999-06-15 2003-02-25 Intel Corporation Method and apparatus for using non-coherent optical bundles for image transmission
US8507856B2 (en) 2005-02-25 2013-08-13 Hitachi High-Technologies Corporation Pattern measuring method and pattern measuring device

Also Published As

Publication number Publication date
CN1109192A (zh) 1995-09-27
TW241431B (en) 1995-02-21
SG65532A1 (en) 1999-06-22

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